CN107247169A - A kind of intelligent electric meter - Google Patents
A kind of intelligent electric meter Download PDFInfo
- Publication number
- CN107247169A CN107247169A CN201710586510.5A CN201710586510A CN107247169A CN 107247169 A CN107247169 A CN 107247169A CN 201710586510 A CN201710586510 A CN 201710586510A CN 107247169 A CN107247169 A CN 107247169A
- Authority
- CN
- China
- Prior art keywords
- induction coil
- intelligent electric
- electric meter
- electromagnetic shielding
- current transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/18—Screening arrangements against electric or magnetic fields, e.g. against earth's field
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/04—Housings; Supporting racks; Arrangements of terminals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The present invention relates to intelligent electric meter technical field, more particularly to a kind of intelligent electric meter with current transformer.The intelligent electric meter includes current transformer, ammeter base, it is electromagnetically shielded box, shown current transformer includes induction coil and insulation crust, the insulation crust is wrapped in the outside of the induction coil, the induction coil includes an annular core and the enamel-covered wire being wrapped in outside annular core, the current transformer is arranged on ammeter base and the axis of annular core is perpendicular to the baseplane of ammeter base, provided with a perforation in described induction coil, provided with connection electric wire in the perforation, the connection electric wire is located in the electromagnetic shielding box with the induction coil, the side of the electromagnetic shielding box leads to live wire outlet and ground wire outlet.
Description
Technical field
The present invention relates to intelligent electric meter technical field, more particularly to a kind of intelligent electric meter with current transformer.
Background technology
Intelligent electric meter is a kind of instrument for being used for measuring electric energy, is widely used in power industry.Intelligent electric meter is on outside
The magnetic disturbance that stationary magnetic field is sampled to electromagnetic current transducer (CT) has following requirement：300mT magnet enters in ammeter bottom
Row interference, ammeter measuring accuracy (CT sampling precisions) deviation answers≤2%.
In existing intelligent electric meter current transformer be it is exposed be fixed in ammeter, be highly susceptible to external magnetic field
Interference causes current indication to produce error, reduces electricity reading precision.
Therefore, interference of the external magnetic field to ammeter reading how is effectively prevented, it is urgently to be resolved hurrily as those skilled in the art
Technical barrier.
The content of the invention
It is an object of the invention to provide a kind of intelligent electric meter, interference of the external magnetic field to ammeter reading can be effectively prevented.
To achieve these goals, the invention provides a kind of intelligent electric meter, including current transformer, ammeter base, electricity
Magnetic screen box, shown current transformer includes induction coil and insulation crust, and the insulation crust is wrapped in the induction coil
Outside, the induction coil includes annular core and the enamel-covered wire being wrapped in outside annular core, the current transformer
On ammeter base and make the axis of annular core be perpendicular in the baseplane of ammeter base, described induction coil to set
Have provided with connection electric wire in a perforation, the perforation, the connection electric wire is located at the electromagnetic shielding with the induction coil
In box, the side of the electromagnetic shielding box leads to live wire outlet and ground wire outlet.
It is preferred that, in addition to relay, binding post and Ampereconductors, the Ampereconductors be connected to the relay with
Between the binding post and through the current transformer annular core.
It is preferred that, the electromagnetic shielding box includes a round metal box and the insulating barrier being covered on round metal box.
It is preferred that, the ground wire wiring of connection round metal box is additionally provided with the electromagnetic shielding box, the ground wire wiring is connected
Ground wire is shielded to the round metal box.
It is preferred that, the end of a thread and line tail of the enamel-covered wire of the induction coil are connected with measurement end line, and the measurement end line is used
In the wiring board of connection intelligent electric meter.
The intelligent electric meter that the present invention is provided, the induction coil of current transformer is arranged in electromagnetic shielding box, extraneous
Presence of the electromagnetic field due to being electromagnetically shielded box, can not have influence in induction coil completely, so that the measurement essence of intelligent electric meter
Degree is greatly improved.
Brief description of the drawings
, below will be to institute in embodiment in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only one described in the present invention
A little embodiments, for those of ordinary skill in the art, can also obtain other accompanying drawings according to these accompanying drawings.
The structural representation for the intelligent electric meter that Fig. 1 provides for a kind of specific embodiment of the invention.
Wherein, in Fig. 1：
Ammeter base 1, relay 2, current transformer 3, binding post 4, Ampereconductors 5.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
It refer to Fig. 1, the structural representation for the intelligent electric meter that Fig. 1 provides for a kind of specific embodiment of the invention.
As shown in figure 1, a kind of intelligent electric meter that the present invention is provided, including current transformer 3, ammeter base 1, electromagnetic shielding
Box, shown current transformer includes induction coil and insulation crust, and the insulation crust is wrapped in the outside of the induction coil,
The induction coil includes an annular core and the enamel-covered wire being wrapped in outside annular core, and the current transformer 3 is arranged on
On ammeter base 1 and the axis of annular core is perpendicular to the baseplane of ammeter base 1, one is provided with described induction coil
Provided with connection electric wire in individual perforation, the perforation, the connection electric wire is located in the electromagnetic shielding box with the induction coil,
The side of the electromagnetic shielding box leads to live wire outlet and ground wire outlet.
The intelligent electric meter that the present invention is provided, the induction coil of current transformer is arranged in electromagnetic shielding box, extraneous
Presence of the electromagnetic field due to being electromagnetically shielded box, can not have influence in induction coil completely, so that the measurement essence of intelligent electric meter
Degree is greatly improved.
It is preferred that scheme in, in addition to relay 2, binding post 4 and Ampereconductors 5, the Ampereconductors 5 are connected to institute
State between relay 2 and the binding post 4 and pass through the annular core of the current transformer 2.
It is preferred that scheme in, the electromagnetic shielding box includes round metal box and the insulation being covered on round metal box
Layer.
It is preferred that scheme in, the ground wire wiring of connection round metal box is additionally provided with the electromagnetic shielding box, the ground wire connects
Line connects ground wire and the round metal box is shielded.
It is preferred that scheme in, the end of a thread and line tail of the enamel-covered wire of the induction coil are connected with measurement end line, the measurement
End line is used for the wiring board for connecting intelligent electric meter.
Construction, feature and the action effect of the present invention, above institute is described in detail according to the embodiment shown in schema above
Only presently preferred embodiments of the present invention is stated, but the present invention is not to limit practical range shown in drawing, it is every according to structure of the invention
Want made change, or be revised as the equivalent embodiment of equivalent variations, still without departing from specification with illustrating during covered spirit,
All should be within the scope of the present invention.
Claims (5)
1. a kind of intelligent electric meter, it is characterised in that including current transformer, ammeter base, electromagnetic shielding box, shown Current Mutual Inductance
Device includes induction coil and insulation crust, and the insulation crust is wrapped in the outside of the induction coil, the induction coil bag
An annular core and the enamel-covered wire being wrapped in outside annular core are included, the current transformer is arranged on ammeter base and makes ring
The axis of shape iron core is perpendicular in the baseplane of ammeter base, described induction coil and perforated provided with one, in the perforation
Provided with connection electric wire, the connection electric wire is located in the electromagnetic shielding box with the induction coil, the electromagnetic shielding box
Side leads to live wire outlet and ground wire outlet.
2. intelligent electric meter according to claim 1, it is characterised in that also including relay, binding post and Ampereconductors,
The Ampereconductors are connected between the relay and the binding post and pass through the annular core of the current transformer.
3. intelligent electric meter according to claim 2, it is characterised in that the electromagnetic shielding box include a round metal box and
It is covered in the insulating barrier on round metal box.
4. intelligent electric meter according to claim 3, it is characterised in that be additionally provided with connection round metal on the electromagnetic shielding box
The ground wire wiring of box, the ground wire wiring connects ground wire and the round metal box is shielded.
5. the intelligent electric meter according to claim any one of 1-4, it is characterised in that the line of the enamel-covered wire of the induction coil
Head and line tail are connected with measurement end line, and the measurement end line is used for the wiring board for connecting intelligent electric meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710586510.5A CN107247169A (en) | 2017-07-18 | 2017-07-18 | A kind of intelligent electric meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710586510.5A CN107247169A (en) | 2017-07-18 | 2017-07-18 | A kind of intelligent electric meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107247169A true CN107247169A (en) | 2017-10-13 |
Family
ID=60014244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710586510.5A Pending CN107247169A (en) | 2017-07-18 | 2017-07-18 | A kind of intelligent electric meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107247169A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203883A (en) * | 2021-03-30 | 2021-08-03 | 国网山东省电力公司莱芜供电公司 | Multifunctional electric energy meter box capable of preventing misconnection |
-
2017
- 2017-07-18 CN CN201710586510.5A patent/CN107247169A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203883A (en) * | 2021-03-30 | 2021-08-03 | 国网山东省电力公司莱芜供电公司 | Multifunctional electric energy meter box capable of preventing misconnection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171013 |
|
| WD01 | Invention patent application deemed withdrawn after publication |